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Ū Hook the grille's safety cable to the appropriate supports.
Ū Close the grille and put back the retainers fastening screws
(for standard grille), Put back tha cover panel in original po-
sition. (for FCND02A grille).
» Fig�24
10 TROUBLESHOOTING
If the unit is not working properly, before calling a service engi-
neer carry out the checks indicated in the table below.
PROBLEM
The unit fails to work
The unit provides insufficient cooling
or heating
The unit "leaks" water
38
FWH-AT/AF
3
2
1
CAUSE
No power supply
The automatic safety cutout has tripped
The on/off switch is on
The air filter is dirty or clogged
The heat exchanger is dirty
An obstacle is obstructing the air intake or outlet
Air is trapped inside the heat exchanger
There are open windows and/or doors
The minimum speed has been selected
The unit has not been installed with the correct inclination
The drainage outlet is clogged
The pump is blocked
» Fig�25
2
9.7
ABNORMAL WATER LEVEL
In case of abnormal backflow of water into the condensate tank
(due to a faulty pump, a dirty tank, a plugged drain pipe, etc.), a
safety contact (float switch) closes the control valves.
If the problem cannot be solved, contact your dealer or the near-
est service centre.
Restore the power supply
Call a service centre for assistance
Start the unit by moving the switch to I
Clean the air filter
Call the installer for assistance
Remove the obstacle
Call the installer for assistance
Close windows and/or doors
Select medium or maximum speed
Call the installer for assistance
Call the installer for assistance
Call the installer for assistance
3
2
1
SOLUTION
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